| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.56 | 5.87 | -1.23 | 21.5 | -24.1 | 2198 | |
| Alabama | 5.71 | 7.30 | -4.39 | 7.8 | -16.0 | 65 | |
| Alaska | 6.61 | 8.27 | -3.89 | 7.4 | -24.1 | 22 | |
| Arizona | 3.88 | 4.60 | 3.27 | 12.6 | -3.8 | 44 | |
| California | 2.69 | 3.39 | 0.50 | 8.7 | -10.4 | 154 | |
| Colorado | 5.39 | 7.05 | 0.42 | 14.2 | -24.1 | 110 | |
| Connecticut | 4.01 | 5.23 | -2.50 | 4.5 | -15.5 | 22 | |
| Florida | 3.88 | 4.97 | -3.01 | 10.3 | -14.1 | 132 | |
| Idaho | 3.54 | 4.66 | -1.56 | 8.8 | -11.0 | 22 | |
| Illinois | 5.34 | 6.69 | -2.96 | 13.6 | -15.5 | 44 | |
| Indiana | 4.87 | 5.81 | -3.44 | 7.1 | -11.0 | 22 | |
| Iowa | 3.59 | 4.76 | -0.17 | 10.5 | -14.2 | 44 | |
| Kansas | 4.60 | 5.84 | 3.72 | 14.0 | -4.7 | 22 | |
| Kentucky | 4.77 | 6.39 | -4.22 | 2.8 | -17.0 | 44 | |
| Louisiana | 4.68 | 5.89 | -2.66 | 5.4 | -14.4 | 22 | |
| Maine | 4.13 | 5.01 | -1.71 | 7.1 | -11.4 | 44 | |
| Maryland | 4.98 | 6.13 | -3.73 | 5.3 | -12.8 | 22 | |
| Massachusetts | 3.98 | 5.07 | -2.60 | 4.6 | -12.6 | 22 | |
| Michigan | 4.08 | 5.05 | -1.89 | 9.3 | -13.4 | 44 | |
| Minnesota | 4.04 | 5.29 | -0.66 | 12.5 | -13.3 | 44 | |
| Missouri | 3.80 | 4.95 | -1.20 | 13.5 | -13.6 | 44 | |
| Montana | 5.32 | 6.71 | 0.64 | 21.5 | -11.2 | 66 | |
| Nebraska | 3.90 | 5.26 | 2.27 | 16.1 | -4.9 | 19 | |
| Nevada | 3.65 | 4.75 | -0.73 | 9.1 | -14.5 | 44 | |
| New Hampshire | 8.04 | 8.67 | 3.76 | 13.9 | -12.1 | 21 | |
| New Jersey | 4.48 | 5.64 | -3.14 | 5.4 | -14.2 | 44 | |
| New Mexico | 3.69 | 5.00 | 1.42 | 11.2 | -12.7 | 22 | |
| New York | 4.61 | 5.98 | -3.51 | 5.3 | -15.4 | 88 | |
| North Carolina | 5.98 | 7.28 | -2.60 | 15.4 | -20.3 | 66 | |
| North Dakota | 4.30 | 5.06 | 1.16 | 12.3 | -10.2 | 44 | |
| Ohio | 5.17 | 6.23 | -3.51 | 6.0 | -16.0 | 22 | |
| Oklahoma | 4.92 | 6.67 | 2.60 | 19.5 | -9.9 | 44 | |
| Oregon | 3.06 | 3.86 | -2.20 | 4.3 | -9.0 | 22 | |
| Pennsylvania | 4.91 | 6.22 | -3.50 | 6.7 | -16.3 | 44 | |
| South Carolina | 5.78 | 7.26 | -3.26 | 14.7 | -15.3 | 22 | |
| South Dakota | 5.58 | 7.17 | 5.06 | 16.8 | -5.2 | 22 | |
| Tennessee | 4.76 | 5.85 | -3.72 | 5.3 | -12.1 | 44 | |
| Texas | 4.69 | 6.05 | 0.54 | 17.1 | -14.8 | 201 | |
| US State Georgia | 6.02 | 7.38 | -4.07 | 12.9 | -18.3 | 66 | |
| Utah | 3.42 | 4.63 | -2.77 | 2.8 | -14.9 | 22 | |
| Vermont | 5.07 | 6.09 | -4.34 | 5.8 | -11.8 | 22 | |
| Virginia | 5.18 | 6.37 | -3.29 | 10.9 | -18.4 | 110 | |
| Washington | 2.69 | 3.31 | -0.20 | 9.9 | -8.2 | 66 | |
| Wisconsin | 4.94 | 6.36 | -3.16 | 12.1 | -14.0 | 22 | |
| Wyoming | 5.31 | 6.36 | 1.54 | 12.6 | -13.9 | 66 |